Breaking a Magnet

Q.

What Is SI Unit Of Magnetic Field?

Q.

A bar magnet of magnetic moment ‘M’ is cut into two halves of equal length. What will be the magnetic moment of each half?

1. $M$

2. $\frac{M}{2}$

3. $\frac{M}{4}$

4. $\frac{M}{3}$

Q.

Question 9

Boojho dipped a bar magnet in a heap of iron filings and pulled it out. He found that iron filings got stuck to the magnet as shown.

(i) Which regions of the magnet have more iron filings sticking to it?
(ii) What are these regions called?

Q. If L be the length of a bar magnet then separation between the two poles is nearly

Q. If a bar magnet is cut lengthwise into two parts, total how many poles will be formed?

1. 4
2. 3
3. 6
4. 2

Q. If a bar magnet is cut along its length, then poles will be generated.

1. two
2. four
3. six
4. eight

Q. When a magnet is broken down. then how two parts of magnet have their independent poles

Q. If a bar magnet is cut lengthwise into two parts, 4 poles will be formed.

1. True
2. False